Delisting risk
Hydrofarm
Manufacturer-distributor of hydroponic and controlled-environment agriculture supplies.
$0.8206
After-hours close+0.00 (+0.33%)
At close$0.8179(−8.11%)
Something off on this page? Send us feedback.
Breakdown13F · Form 4
Institutions 5.86%279.4K sharesInsiders 21.09%1.00M sharesOther 73.05%3.48M shares
Shares outstanding 4.76M · Float 3.49M · 73.3% free float
Institutions13F, as of Mar 31, 2026
19 holders · 279.4K shares · 5 new positions · 7 increased · 6 reduced · 6 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Renaissance Technologies LLC | 72.2K | 1.51% | −300 | May 14, 2026 |
| Geode Capital Management, LLC | 62.6K | 1.31% | +15.0K | May 15, 2026 |
| BlackRock, Inc. | 50.5K | 1.06% | 0 | May 13, 2026 |
| Vanguard Capital Management LLC | 39.7K | 0.83% | +39.7Knew | May 15, 2026 |
| Vanguard Fiduciary Trust Co | 18.1K | 0.38% | +18.1Knew | May 8, 2026 |
| State Street Corp | 16.0K | 0.34% | 0 | May 15, 2026 |
| XTX Topco Ltd | 11.8K | 0.25% | +11.8Knew | May 15, 2026 |
| Tower Research Capital LLC (TRC) | 2.9K | 0.06% | −652 | May 15, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Bogaczyk Janusz Michal | 9.80% | 454.0K | 13G | Mar 25, 2025 ↗ |
| Dumont Master Fund LPincl. Christopher Richard Yetter, Dumont Global LP +1 more | 6.55% | 305.0K | 13D | Oct 14, 2025 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Richard Christopher Yetter | director | 355.0K | 7.45% | Jun 25, 2026 |
| William Douglas Toler | director, officer, other: Chief Executive Officer | 221.7K | 4.65% | Jan 8, 2026 |
| Renah Persofsky | director | 91.5K | 1.92% | Jun 25, 2026 |
| Patrick Chung | director | 91.1K | 1.91% | Jun 25, 2026 |
| Melisa Denis | director | 88.4K | 1.86% | Jun 25, 2026 |
| Susan Peters | director | 61.3K | 1.29% | Jun 10, 2025 |
| Bruce John Lindeman | officer: Chief Executive Officer | 56.7K | 1.19% | Aug 20, 2025 |
| Mark S. Parker | officer: President | 18.6K | 0.39% | Aug 11, 2026 |
| Kevin Patrick O'Brien | officer: Chief Financial Officer | 13.2K | 0.28% | Jan 8, 2026 |
| Erica Ackerman | officer: CAO and Corporate Controller | 7.4K | 0.16% | Aug 11, 2026 |
2 ten-percent owners hold 210.5K shares by Form 4, outside the officers-and-directors figure above · 3 people have not refiled in the last 18 months (60.6K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Jan 6, 2026 | Kevin Patrick O'Brienofficer: Chief Financial Officer | Sale | 1,150 | $1.51 | 13,222 |
| Dec 5, 2025 | Melisa Denisdirector | Sale | 120 | $1.92 | 58,423 |
| Dec 4, 2025 | Melisa Denisdirector | Sale | 2,875 | $1.88 | 58,543 |
CongressHouse and Senate disclosures
Not reported.